The SDBootstrap demo builds upon the VGA demo, and adds a simple SPI
\ncontroller, allowing files to be read from an SD Card.<\/p>\n
The Firmware directory contains a CardContents directory, which in turn
\ncontains a few image files, and a “manifest” file which describes what the
\nboot firmware should do with them.
\nThe example manifest loads and displays each image in turn, but it’s also
\npossible to load and run a program.<\/p>\n
The firmware currently contains debugging printfs – but once these are
\nremoved (with a couple of #defines in the Makefile) the firmware should fit comfortably within 4 kilobytes.<\/p>\n
On the Altera DE1, the resulting mini system-on-chip takes up just over
\n2,000 logic elements.<\/p>\n","protected":false},"excerpt":{"rendered":"
The SDBootstrap demo builds upon the VGA demo, and adds a simple SPI controller, allowing files to be read from an SD Card. The Firmware directory contains a CardContents directory, which in turn contains a few image files, and a … Continue reading